Respostas hemodinâmicas, metabólicas e percetivas ao treino com restrição do fluxo sanguíneo versus treino de resistência convencional em jovens com excesso de peso

Autores

  • Soontaraporn Huntula Srinakharinwirot University https://orcid.org/0000-0003-0243-2539
  • Janyaruk Suriyut Srinakharinwirot University
  • Meesook Srisongrach Srinakharinwirot University
  • Chariya Nguanjinda Srinakharinwirot University

DOI:

https://doi.org/10.47197/retos.v79.117796

Palavras-chave:

Restrição do fluxo sanguíneo, hemodinâmica, lactato sanguíneo, sobrepeso

Resumo

Introdução: O treino de força beneficia adultos jovens com excesso de peso, mas a adesão ao método tradicional de alta intensidade (AI) é limitada pelo desconforto e pela perceção de esforço. O exercício com restrição do fluxo sanguíneo de baixa intensidade (RFSBI) surgiu como uma alternativa, embora as evidências comparativas sobre as respostas agudas nesta população sejam escassas.

Objectivo: Comparar as respostas hemodinâmicas, perceptivas e metabólicas agudas do RFSBI versus AI em adultos jovens com excesso de peso.

Metodologia: Vinte e quatro adultos jovens com excesso de peso foram aleatoriamente alocados a RFSBI (n=12; 40% de 1RM, 60% de pressão de oclusão) ou AI (n=12; 70% de 1RM). As variáveis ​​hemodinâmicas (frequência cardíaca, pressão arterial sistólica e diastólica) e as variáveis ​​percetivas (perceção de esforço e desconforto) foram avaliadas antes e depois de cada sessão. O lactato sanguíneo foi medido após a sessão, no início do estudo e após 8 semanas de intervenção.

Resultados: Inicialmente, o treino de alta intensidade (HT) foi percecionado como significativamente mais exigente e desconfortável, gerando maiores aumentos na frequência cardíaca e na pressão arterial sistólica em comparação com o treino de força com restrição de fluxo sanguíneo (LTBFR). Em contrapartida, o LTBFR aumentou mais a pressão arterial diastólica. Ambos os protocolos produziram aumentos iniciais significativos e comparáveis ​​nos níveis de lactato. Após 8 semanas, a resposta aguda de lactato pós-exercício foi significativamente atenuada em ambos os grupos, indicando uma maior eficiência metabólica.

Conclusões: Em adultos jovens com excesso de peso, o HT convencional impõe uma carga cardiovascular e percetiva aguda superior ao LTBFR. No entanto, ambas as modalidades geram stress metabólico e adaptações favoráveis. O LTBFR proporciona estes benefícios com menor esforço cardiovascular e melhor tolerabilidade, o que justifica a sua utilização como uma estratégia inicial potente e segura nesta população.

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02-06-2026

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Artigos de caráter científico: trabalhos de pesquisas básicas e/ou aplicadas.

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Huntula, S., Suriyut, J., Srisongrach, M., & Nguanjinda, C. (2026). Respostas hemodinâmicas, metabólicas e percetivas ao treino com restrição do fluxo sanguíneo versus treino de resistência convencional em jovens com excesso de peso. Retos, 79, 176-188. https://doi.org/10.47197/retos.v79.117796